ASTM F2766-11(2015)
(Test Method)Standard Test Method for Boat Barriers
Standard Test Method for Boat Barriers
SIGNIFICANCE AND USE
5.1 Governmental and private facilities may use “motor boat barriers” with an ASTM International impact rating. Each agency/organization may have their own, or use other, certification lists.
5.2 When dynamic testing is required, procedures in this test method permit performance evaluation of a boat barrier to certify its level of protection against motor boat attack.
5.3 ASTM Intentional Impact Ratings for Boat Barriers shall not be used unless subjected to one or more of the dynamic tests presented herein.
5.4 Small and large boats interact differently with various security devices. Additionally, if occupant risk is of concern, information may be gathered that allows assessment of the likelihood of occupant injury.
SCOPE
1.1 This test method is intended to provide a means of evaluating the performance of Boat Barriers and through that evaluation provide a certification of performance in the form of an ASTM International Impact Rating for Boat Barriers to be used in the design and specification of Boat Barriers. In addition to the Impact Rating, testing under this standard requires the determination and reporting of the maximum deformation of the barrier during testing to further aid in appropriate barrier selection.
1.2 This test method provides a range of small surface motor boat impact condition levels and penetration performance levels to select boat barriers appropriate for use at potentially threatened onshore port facilities, offshore facilities, and floating assets.
1.3 This test method is designed to test and evaluate the stopping capabilities of boat barriers at the point of impact and the moments subsequent to impact of a small surface motor boat.
1.4 This test method is not intended to be used for the testing criteria of floating “lines of demarcation” or similar items or technologies that do not make claims of “boat or small surface motor boat” stopping capabilities.
1.5 Governing agencies may adopt those performance levels in this test method that satisfy their specific needs and assign certification ratings for small surface motor boat stopping barriers based on the tests and test methodologies described in this test method.
1.6 Many test parameters are standardized to arrive at common small surface motor boat types and masses, enhance test realism and replications, and produce uniform rating designations.
1.6.1 Compliance with these rating designations establishes a measure of performance but does not render any boat barrier invulnerable to motor boat penetration. Caution should be exercised in interpreting test findings and projecting results to other hypothetical conditions.
1.7 Product design/certification in this test method only addresses the ability of the barrier to withstand the impact of the test motor boat. It does not represent an endorsement of the product/design or address its operational suitability.
1.8 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: F2766 − 11 (Reapproved 2015)
Standard Test Method for
Boat Barriers
This standard is issued under the fixed designation F2766; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope exercised in interpreting test findings and projecting results to
other hypothetical conditions.
1.1 This test method is intended to provide a means of
evaluating the performance of Boat Barriers and through that 1.7 Product design/certification in this test method only
evaluationprovideacertificationofperformanceintheformof addresses the ability of the barrier to withstand the impact of
an ASTM International Impact Rating for Boat Barriers to be the test motor boat. It does not represent an endorsement of the
used in the design and specification of Boat Barriers. In product/design or address its operational suitability.
addition to the Impact Rating, testing under this standard
1.8 Units—The values stated in inch-pound units are to be
requires the determination and reporting of the maximum
regarded as standard. The values given in parentheses are
deformation of the barrier during testing to further aid in
mathematical conversions to SI units that are provided for
appropriate barrier selection.
information only and are not considered standard.
1.2 This test method provides a range of small surface
1.9 This standard does not purport to address all of the
motor boat impact condition levels and penetration perfor-
safety concerns, if any, associated with its use. It is the
mance levels to select boat barriers appropriate for use at
responsibility of the user of this standard to establish appro-
potentiallythreatenedonshoreportfacilities,offshorefacilities,
priate safety and health practices and determine the applica-
and floating assets.
bility of regulatory limitations prior to use.
1.3 This test method is designed to test and evaluate the
2. Referenced Documents
stopping capabilities of boat barriers at the point of impact and
the moments subsequent to impact of a small surface motor 2.1 SAE Standard:
boat. SAE J-211/2 Instrumentation for Impact Test—Part 2: Pho-
tographic Instrumentation
1.4 This test method is not intended to be used for the
2.2 ISO Standard:
testing criteria of floating “lines of demarcation” or similar
ISO 17025 General Requirements for the Competence of
items or technologies that do not make claims of “boat or small
Testing and Calibration Laboratories
surface motor boat” stopping capabilities.
2.3 Federal Standard:
1.5 Governingagenciesmayadoptthoseperformancelevels
46CFR24.10-1 Shipping:Chapter1—CoastGuard,Depart-
in this test method that satisfy their specific needs and assign
ment of Homeland Security—Part 24: General
certification ratings for small surface motor boat stopping
Provisions—Definitions
barriers based on the tests and test methodologies described in
this test method.
3. Terminology
1.6 Many test parameters are standardized to arrive at
3.1 Definitions:
common small surface motor boat types and masses, enhance
3.1.1 accredited independent testing laboratory, n—testing
test realism and replications, and produce uniform rating
laboratory accredited to perform the referenced testing proce-
designations.
dures by a nationally recognized accrediting agency in accor-
1.6.1 Compliance with these rating designations establishes
dance with ISO 17025 and led by a test director; an accredited
a measure of performance but does not render any boat barrier
independent testing laboratory shall have access to the
invulnerable to motor boat penetration. Caution should be
apparatus, facilities, personnel, and calibrated instruments that
Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
This test method is under the jurisdiction ofASTM Committee F12 on Security PA 15096-0001, http://www.sae.org.
Systems and Equipment and is the direct responsibility of Subcommittee F12.10 on Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
Systems Products and Services. 4th Floor, New York, NY 10036, http://www.ansi.org.
Current edition approved June 1, 2015. Published June 2015. Originally AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
approved in 2011. Last previous edition approved in 2011 as F2766 – 11. DOI: 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
10.1520/F2766-11R15. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2766 − 11 (2015)
are necessary to inspect and test the boat barriers; and an 3.1.6 length, n—the straight line horizontal measurement of
accredited independent testing laboratory may not: (1) have the overall length from the foremost part of the boat to the
any financial interest in or otherwise be affiliated with compa- aftermost part of the boat, measured from end to end over the
nies or individuals, for which they perform accreditation deck excluding sheer, and measured parallel to the centerline.
testing; (2) be owned or controlled by the manufacturer of Bow sprits, bumpkins, rudders, outboard motor brackets,
similar equipment or material to be inspected; (3) be owned or handles, and other similar fittings, attachments, and extensions
controlled by a vendor of the equipment or material to be are not included in the measurement.
inspected or a vendor of similar equipment or material; (4) be
3.1.7 beam, n—the maximum width of a vessel from: (1)
owned or controlled by a supplier of materials to the manu-
outside of planking to outside of planking on wooden vessels
facturer; or (5) advertise or promote the manufacturer’s equip-
and (2) outside of frame to outside of frame on all other
ment or material that the laboratory inspects and tests.
vessels.
3.1.1.1 Discussion—Hereinafter, accredited independent
3.1.8 draft, n—the vertical distance from the molded base-
testing laboratories are referred to as “the test facility”, with
line (bottom) of a vessel amidships to the waterline (when
“accredited” being understood as prerequisite. Other indepen-
vessel is waterborne).
denttestingagenciesactivelypursuingaccreditationandwhose
3.1.9 penetration, n—hereinafter penetration shall mean the
testing protocols are accepted by a federal agency may also
distance from the point of impact between the motor boat and
conduct tests for a period of one year after performing the first
the boat barrier and the point where the velocity of the motor
test using this test method.
boat has been reduced to zero.
3.1.2 line of demarcation, n—system used to identify re-
3.1.9.1 Discussion—Penetration may also be understood as
stricted waters.
the maximum deflection of the barrier from its resting position
3.1.2.1 Discussion—This type of floating system provides
just prior to motor boat impact to the point where the motor
little or no boat stopping/delay capacity.
boat has been effectively halted. This penetration value is
3.1.3 waterfront boat barrier, n—a device intended to pro- intended to aid the end-user in the estimation of achievable
vide a standoff from protected assets by (1) delineating an stand-off between the threat vessel and the asset to be pro-
exclusion zone around the waterfront approach to an asset and tected. Users of this standard should be aware of the impact of
(2) preventing the entry into the exclusion zone by a water- barrier elasticity and as-tested versus in-place barrier length(s)
on the total deflection/penetration to be expected in the actual
borne threat impeding the motion of a boat attempting to
penetrate a protected area. application of the barrier. Penetration shall not mean breach or
otherwise overwhelming of the barrier which shall constitute
3.1.3.1 Discussion—The barrier is primarily intended to
failure of the barrier to perform.
stop, delay, or destroy hostile high-speed motor boat of 65 ft
(19.8 m) or less in length.
3.1.10 specifying agency, n—any entity (federal, state, for-
eignorprivate)requiringthetestingandcertificationunderthis
3.1.4 motorboat, n—means any vessel 65 ft (19.8 m) in
ASTM standard of a manufacturer’s boat barrier.
length or less, which is equipped with propulsion machinery
(including steam).
3.2 Acronyms:
3.1.4.1 Discussion—The length must be measured from
3.2.1 DoN—U.S. Department of the Navy
end-to-end over the deck, excluding sheer. This term includes
3.2.2 USCG—U.S. Coast Guard
a boat equipped with a detachable motor. For the purpose of
3.2.3 BOR—Bureau of Reclamation
this document, motorboats are included under the term vessel,
unless specifically noted otherwise. The various length catego-
4. Summary of Test Method
ries of motorboats are as follows:
(1) Any motorboat less than 16 ft (4.9 m) in length.
4.1 For a boat barrier to be tested, the following shall be
(2) Any motorboat 16 ft (4.9 m) or over and less than 26 ft
submitted to the specifying agency and the proposed test
(7.9 m) in length.
facility for review: (1) a set of complete barrier shop drawings;
(3) Any motorboat 26 ft (7.9 m) or over and less than 40 ft
(2) barrier design and layout (as proposed for testing) in plan,
(12.2 m) in length.
elevation, and section; (3) barrier mooring/anchorages in
(4) Anymotorboat40ft(12.2m)oroverandnotmorethan
detail; and (4) a barrier materials list. Upon modification, if
65 ft (19.8 m) in length.
required, and acceptance by the agency, the proposed boat
barrier test is scheduled, in coordination with an agency
3.1.5 vessel, n—includes every description of watercraft or
technical representative, for testing and evaluation at the
other artificial contrivance, used or capable of being used as a
accredited facility. Test article construction and test prepara-
means of transportation on water.
tions are made in accordance with this test method.
3.1.5.1 Discussion—In addition to motorboats defined in
3.1.4, vessels also include the following: 4.2 A certification rating level test, motor boat weight and
(1) Motor vessel—any vessel more than 65 ft (19.8 m) in test speed is selected by the vendor in coordination with the
length, which is propelled by machinery other than steam. accredited independent testing laboratory. Following receipt of
(2) Sailboat—aboatdesignedorintendedtousesailsasthe all pretest documentation, the test is conducted at the chosen
primary means of propulsion. speed using the defined test. Dynamic test data are recorded
(3) Barge—a non-self-propelled vessel. using the accredited methods.
F2766 − 11 (2015)
TABLE 1 Threat Speed Zones
4.3 The test director shall determine acceptability of
whether testing conditions are within acceptable limits for a Zone Speed, knots (m/s)
valid test. The rating is determined/recommended by the test I 0–20 (0–10.3)
II >20–40 (>10.3–20.6)
director at an accredited facility.
III >40–60 (>20.6–30.9)
IV >60–80 (>30.9–41.2)
5. Significance and Use
V >80 (>41.2)
5.1 Governmental and private facilities may use “motor
boat barriers” with anASTM International impact rating. Each
agency/organization may have their own, or use other, certifi-
payload, for example, passengers, is unlikely to contribute to
cation lists.
the kinetic interaction and is excluded from this measurement.
The mass of motorboats varies considerably but those relevant
5.2 When dynamic testing is required, procedures in this
to this test method are very likely to be between 1000–100 000
test method permit performance evaluation of a boat barrier to
lbm (454–45 359 kg).
certify its level of protection against motor boat attack.
6.3.2 The other primary physical attribute of the threat craft
5.3 ASTM Intentional Impact Ratings for Boat Barriers
is their maximum speed. The maximum attainable speed for a
shall not be used unless subjected to one or more of the
particular craft is highly dependent upon a number of factors
dynamic tests presented herein.
such as engine type and configuration, hull form and state of
5.4 Small and large boats interact differently with various cleanliness, loading and draft, harbor geography and
security devices. Additionally, if occupant risk is of concern, configuration, sea state, and so forth. The great variety of
information may be gathered that allows assessment of the commercial and custom boat configurations makes it impos-
likelihood of occupant injury. sible to put an absolute upper bound on boat speed. To account
for such variations, the range of possible speeds is divided into
6. Threat
five zones in increments of 20 knots (10.3 m/s) each (Table 1).
This test method recognizes that, in actual maritime
6.1 Threat Overview—Waterborne hazards come in a great
environments, the vast majority of motor boats that can travel
variety of forms and directions. In recent years, there has been
at speeds greater than 60 knots (30.9 m/s) will only infre-
worldwide use of watercraft for malicious purposes including
quently encounter operational conditions that will accommo-
smuggling, piracy, covert infiltration, and direct attack. There
date speeds that high.
has been heightened interest in the threat posed by such craft
6.3.3 The range of physical parameters of primary interest
because of the highly visible use of explosive-laden boats by
to this test method is shown in Fig. 1. It represents the trade
terrorists and insurgents.
space in which barrier testing will be conducted under this test
6.2 Threat Characterization:
method (Section 7).
6.2.1 There is tremendous range in the size and shape of
6.3.4 Other physical attributes of test craft relevant to
motor boat that could pose a threat. For this test method, the
barrier testing (for example, draft and hull configuration) are
definition of threat craft will be constrained to keep the scope
described in Section 7.
of the threat within reasonable bounds.Threat craft are those to
6.4 Critical Barrier Evaluation Parameter—The physical
which the USCG’s definition of motorboat applies (46 CFR
parameter that will be used to assess boat barrier performance
24.10-1).
is kinetic energy. The range of the maximum kinetic energy of
6.2.2 The population of craft to which this definition applies
motor boats is very large. A small skiff may be able to reach
isbothnumerousanddiverse; therefore,additionalgranularity
several thousand ft-lbf (joules) of energy (500 lbm at 15 knots
is required to describe meaningfully the range of plausible
is 5000 ft-lbf [227 kg at 7.7 m/s is 6775 J]). Common
threat craft. Some U.S. Government agencies have used craft
privately-owned cruisers can readily reach several hundred
size
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F2766 − 11 F2766 − 11 (Reapproved 2015)
Standard Test Method for
Boat Barriers
This standard is issued under the fixed designation F2766; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method is intended to provide a means of evaluating the performance of Boat Barriers and through that evaluation
provide a certification of performance in the form of an ASTM International Impact Rating for Boat Barriers to be used in the
design and specification of Boat Barriers. In addition to the Impact Rating, testing under this standard requires the determination
and reporting of the maximum deformation of the barrier during testing to further aid in appropriate barrier selection.
1.2 This test method provides a range of small surface motor boat impact condition levels and penetration performance levels
to select boat barriers appropriate for use at potentially threatened onshore port facilities, offshore facilities, and floating assets.
1.3 This test method is designed to test and evaluate the stopping capabilities of boat barriers at the point of impact and the
moments subsequent to impact of a small surface motor boat.
1.4 This test method is not intended to be used for the testing criteria of floating “lines of demarcation” or similar items or
technologies that do not make claims of “boat or small surface motor boat” stopping capabilities.
1.5 Governing agencies may adopt those performance levels in this test method that satisfy their specific needs and assign
certification ratings for small surface motor boat stopping barriers based on the tests and test methodologies described in this test
method.
1.6 Many test parameters are standardized to arrive at common small surface motor boat types and masses, enhance test realism
and replications, and produce uniform rating designations.
1.6.1 Compliance with these rating designations establishes a measure of performance but does not render any boat barrier
invulnerable to motor boat penetration. Caution should be exercised in interpreting test findings and projecting results to other
hypothetical conditions.
1.7 Product design/certification in this test method only addresses the ability of the barrier to withstand the impact of the test
motor boat. It does not represent an endorsement of the product/design or address its operational suitability.
1.8 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are
mathematical conversions to SI units that are provided for information only and are not considered standard.
1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2.1 SAE Standard:
SAE J-211/2 Instrumentation for Impact Test—Part 2: Photographic Instrumentation
2.2 ISO Standard:
ISO 17025 General Requirements for the Competence of Testing and Calibration Laboratories
2.3 Federal Standard:
46 CFR 24.10-1 Shipping: Chapter 1—Coast Guard, Department of Homeland Security—Part 24: General Provisions—
Definitions
This test method is under the jurisdiction of ASTM Committee F12 on Security Systems and Equipment and is the direct responsibility of Subcommittee F12.10 on
Systems Products and Services.
Current edition approved Feb. 1, 2011June 1, 2015. Published June 2011June 2015. Originally approved in 2011. Last previous edition approved in 2011 as F2766 – 11.
DOI: 10.1520/F2766-11.10.1520/F2766-11R15.
Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http://www.sae.org.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2766 − 11 (2015)
3. Terminology
3.1 Definitions:
3.1.1 accredited independent testing laboratory, n—testing laboratory accredited to perform the referenced testing procedures
by a nationally recognized accrediting agency in accordance with ISO 17025 and led by a test director; an accredited independent
testing laboratory shall have access to the apparatus, facilities, personnel, and calibrated instruments that are necessary to inspect
and test the boat barriers; and an accredited independent testing laboratory may not: (1) have any financial interest in or otherwise
be affiliated with companies or individuals, for which they perform accreditation testing; (2) be owned or controlled by the
manufacturer of similar equipment or material to be inspected; (3) be owned or controlled by a vendor of the equipment or material
to be inspected or a vendor of similar equipment or material; (4) be owned or controlled by a supplier of materials to the
manufacturer; or (5) advertise or promote the manufacturer’s equipment or material that the laboratory inspects and tests.
3.1.1.1 Discussion—
Hereinafter, accredited independent testing laboratories are referred to as “the test facility”, with “accredited” being understood as
prerequisite. Other independent testing agencies actively pursuing accreditation and whose testing protocols are accepted by a
federal agency may also conduct tests for a period of one year after performing the first test using this test method.
3.1.2 line of demarcation, n—system used to identify restricted waters.
3.1.2.1 Discussion—
This type of floating system provides little or no boat stopping/delay capacity.
3.1.3 waterfront boat barrier, n—a device intended to provide a standoff from protected assets by (1) delineating an exclusion
zone around the waterfront approach to an asset and (2) preventing the entry into the exclusion zone by a waterborne threat
impeding the motion of a boat attempting to penetrate a protected area.
3.1.3.1 Discussion—
The barrier is primarily intended to stop, delay, or destroy hostile high-speed motor boat of 65 ft (19.8 m) or less in length.
3.1.4 motorboat, n—means any vessel 65 ft (19.8 m) in length or less, which is equipped with propulsion machinery (including
steam).
3.1.4.1 Discussion—
The length must be measured from end-to-end over the deck, excluding sheer. This term includes a boat equipped with a detachable
motor. For the purpose of this document, motorboats are included under the term vessel, unless specifically noted otherwise. The
various length categories of motorboats are as follows:
(1) Any motorboat less than 16 ft (4.9 m) in length.
(2) Any motorboat 16 ft (4.9 m) or over and less than 26 ft (7.9 m) in length.
(3) Any motorboat 26 ft (7.9 m) or over and less than 40 ft (12.2 m) in length.
(4) Any motorboat 40 ft (12.2 m) or over and not more than 65 ft (19.8 m) in length.
3.1.5 vessel, n—includes every description of watercraft or other artificial contrivance, used or capable of being used as a means
of transportation on water.
3.1.5.1 Discussion—
In addition to motorboats defined in 3.1.4, vessels also include the following:
(1) Motor vessel—any vessel more than 65 ft (19.8 m) in length, which is propelled by machinery other than steam.
(2) Sailboat—a boat designed or intended to use sails as the primary means of propulsion.
(3) Barge—a non-self-propelled vessel.
3.1.6 length, n—the straight line horizontal measurement of the overall length from the foremost part of the boat to the aftermost
part of the boat, measured from end to end over the deck excluding sheer, and measured parallel to the centerline. Bow sprits,
bumpkins, rudders, outboard motor brackets, handles, and other similar fittings, attachments, and extensions are not included in
the measurement.
3.1.7 beam, n—the maximum width of a vessel from: (1) outside of planking to outside of planking on wooden vessels and (2)
outside of frame to outside of frame on all other vessels.
F2766 − 11 (2015)
3.1.8 draft, n—the vertical distance from the molded baseline (bottom) of a vessel amidships to the waterline (when vessel is
waterborne).
3.1.9 penetration, n—hereinafter penetration shall mean the distance from the point of impact between the motor boat and the
boat barrier and the point where the velocity of the motor boat has been reduced to zero.
3.1.9.1 Discussion—
Penetration may also be understood as the maximum deflection of the barrier from its resting position just prior to motor boat
impact to the point where the motor boat has been effectively halted. This penetration value is intended to aid the end-user in the
estimation of achievable stand-off between the threat vessel and the asset to be protected. Users of this standard should be aware
of the impact of barrier elasticity and as-tested versus in-place barrier length(s) on the total deflection/penetration to be expected
in the actual application of the barrier. Penetration shall not mean breach or otherwise overwhelming of the barrier which shall
constitute failure of the barrier to perform.
3.1.10 specifying agency, n—any entity (federal, state, foreign or private) requiring the testing and certification under this ASTM
standard of a manufacturer’s boat barrier.
3.2 Acronyms:
3.2.1 DoN—U.S. Department of the Navy
3.2.2 USCG—U.S. Coast Guard
3.2.3 BOR—Bureau of Reclamation
4. Summary of Test Method
4.1 For a boat barrier to be tested, the following shall be submitted to the specifying agency and the proposed test facility for
review: (1) a set of complete barrier shop drawings; (2) barrier design and layout (as proposed for testing) in plan, elevation, and
section; (3) barrier mooring/anchorages in detail; and (4) a barrier materials list. Upon modification, if required, and acceptance
by the agency, the proposed boat barrier test is scheduled, in coordination with an agency technical representative, for testing and
evaluation at the accredited facility. Test article construction and test preparations are made in accordance with this test method.
4.2 A certification rating level test, motor boat weight and test speed is selected by the vendor in coordination with the
accredited independent testing laboratory. Following receipt of all pretest documentation, the test is conducted at the chosen speed
using the defined test. Dynamic test data are recorded using the accredited methods.
4.3 The test director shall determine acceptability of whether testing conditions are within acceptable limits for a valid test. The
rating is determined/recommended by the test director at an accredited facility.
5. Significance and Use
5.1 Governmental and private facilities may use “motor boat barriers” with an ASTM International impact rating. Each
agency/organization may have their own, or use other, certification lists.
5.2 When dynamic testing is required, procedures in this test method permit performance evaluation of a boat barrier to certify
its level of protection against motor boat attack.
5.3 ASTM Intentional Impact Ratings for Boat Barriers shall not be used unless subjected to one or more of the dynamic tests
presented herein.
5.4 Small and large boats interact differently with various security devices. Additionally, if occupant risk is of concern,
information may be gathered that allows assessment of the likelihood of occupant injury.
6. Threat
6.1 Threat Overview—Waterborne hazards come in a great variety of forms and directions. In recent years, there has been
worldwide use of watercraft for malicious purposes including smuggling, piracy, covert infiltration, and direct attack. There has
been heightened interest in the threat posed by such craft because of the highly visible use of explosive-laden boats by terrorists
and insurgents.
6.2 Threat Characterization:
6.2.1 There is tremendous range in the size and shape of motor boat that could pose a threat. For this test method, the definition
of threat craft will be constrained to keep the scope of the threat within reasonable bounds. Threat craft are those to which the
USCG’s definition of motorboat applies (46 CFR 24.10-1).
6.2.2 The population of craft to which this definition applies is both numerous and diverse; therefore, additional granularity
is required to describe meaningfully the range of plausible threat craft. Some U.S. Government agencies have used craft size
In 2004, there were over 12 million registered motorboats in the United States alone. (USCG)
F2766 − 11 (2015)
TABLE 1 Threat Speed Zones
Zone Speed, knots (m/s)
I 0–20 (0–10.3)
II >20–40 (>10.3–20.6)
III >40–60 (>20.6–30.9)
IV >60–80 (>30.9–41.2)
V >80 (>41.2)
distribution statistics as a basis for both characterization and requirements. As stated in 1.4, this test method is limited in scope
to boat barrier performance criteria and makes no judgment about what level of performance may be required in a specified
situation. Threat characterization is therefore limited to motor boat characterization only.
6.3 Threat Craft—Physical Characteristics:
6.3.1 The principle physical attribute of threat craft germane to boat barriers is mass. Specifically for this test method is the total
weight of the craft and its contents that can contribute to a barrier penetration defined here as “rigid mass.” Unsecured payload,
for example, passengers, is unlikely to contribute to the kinetic interaction and is excluded from this measurement. The mass of
motorboats varies considerably but those relevant to this test method are very likely to be between 1000–100 000 lbm (454–45
359 kg).
6.3.2 The other primary physical attribute of the threat craft is their maximum speed. The maximum attainable speed for a
particular craft is highly dependent upon a number of factors such as engine type and configuration, hull form and state of
cleanliness, loading and draft, harbor geography and configuration, sea state, and so forth. The great variety of commercial and
custom boat configurations makes it impossible to put an absolute u
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Questions, Comments and Discussion
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